Go Joe question

I have a Go Joe on my Litewave Wing ( 161x 44) big board. When I fall and need to get back to the board, the board really struggles to get down wind. For some reason the board will stay locked in a 90 degree angle to the wind, And not spin down wind so the Go Joe can catch some wind and do its thing. I am thinking it may be because the board has almost no rocker. Or possibly I need to change the angle of the Go Joe on the board. Any input would be greatly appreciated.
I also would like to say that I think the Go Joe is a fantastic invention and have one on both of my boards. Even If it struggles with my big board I know where it is, and that is worth the price alone.

The wing is my light wind weapon. I can ride upwind with my 15m flite in 12mph wind. The Go Joe works great on my smaller Naish that has lots of rocker. I was just curious if it was size or a rocker issue.

I have a Go Joe on my Litewave Wing ( 161x 44) big board. When I fall and need to get back to the board, the board really struggles to get down wind. For some reason the board will stay locked in a 90 degree angle to the wind, And not spin down wind so the Go Joe can catch some wind and do its thing. I am thinking it may be because the board has almost no rocker. Or possibly I need to change the angle of the Go Joe on the board. Any input would be greatly appreciated.
I also would like to say that I think the Go Joe is a fantastic invention and have one on both of my boards. Even If it struggles with my big board I know where it is, and that is worth the price alone.